Medmed Math/Statistics/Regressions Menu; Mid Math/String Menu - Texas Instruments TITANIUM TI-89 User Manual

MedMed
MATH/Statistics/Regressions menu
list1
MedMed ,
Calculates the median-median line and updates
all the system statistics variables.
All the lists must have equal dimensions except
for .
list5
represents xlist.
list1
represents ylist.
list2
list3 represents frequency.
list4 represents category codes.
list5 represents category include list.
Note:
list1
or c1–c99 (columns in the last data variable
shown in the Data/Matrix Editor).
have to be a variable name and cannot be c1–
c99.
mid()
MATH/String menu
sourceString
mid(
Returns
sourceString
.
start
If
count
dimension of
from
sourceString
number
must be ‚ 0. If
count
string.
sourceList
mid( ,
Returns
with element number
If
count
dimension of
sourceList
must be ‚ 0. If count = 0, returns an empty
count
list.
sourceStringList
mid(
Returns
sourceStringList
.
start
Appendix A: Functions and Instructions
[ ]
list2 list3 list4 list5
, [ ] [, , ]
through must be a variable name
list4
⇒ string
start count
, [, ])
characters from character string
count
, beginning with character number
is omitted or is greater than the
, returns all characters
sourceString
, beginning with character
.
start
= 0, returns an empty
count
]) ⇒ ⇒ ⇒ ⇒
start count list
[,
elements from
count sourceList
.
start
is omitted or is greater than the
, returns all elements from
sourceList
, beginning with element number
⇒
start count
, [, ])
strings from the list of strings
count
, beginning with element number
In function graphing mode:
{0,1,2,3,4,5,6} ! L1 ¸
{0,2,3,4,3,4,6} ! L2 ¸
MedMed L1,L2 ¸
ShowStat ¸
¸
Regeq(x) ! y1(x) ¸
does not
list5
NewPlot 1,1,L1,L2 ¸
¥%
mid("Hello there",2) ¸
mid("Hello there",7,3) ¸
mid("Hello there",1,5) ¸
mid("Hello there",1,0) ¸
mid({9,8,7,6},3) ¸
, beginning mid({9,8,7,6},2,2) ¸
mid({9,8,7,6},1,2) ¸
mid({9,8,7,6},1,0) ¸
.
start
mid({"A","B","C","D"},2,2) ¸
list
{0 1 2 }
...
{0 2 3 }
...
Done
Done
Done
"ello there"
"the"
"Hello"
""
{7 6}
{8 7}
{9 8}
{}
{"B" "C"}
843